Preparation and structure characterization of a natural acetylated fructooligosaccharide from Polygonatum sibiricum and its alleviative effect on colitis by inhibiting NLRP3 pathway

Autor: Shengchen Ding, Jun Chen, Guangming Chen, Weiyi Tian, Junping Zheng, Haiming Hu, Lu Cao, Xiaowei Yao, Baifei Hu, Hongtao Liu
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Journal of Functional Foods, Vol 113, Iss , Pp 106027- (2024)
Druh dokumentu: article
ISSN: 1756-4646
DOI: 10.1016/j.jff.2024.106027
Popis: This study aimed to isolate oligosaccharides from P. sibiricum, analyze its structure, and elucidate the pharmacological mechanism for colitis improvement. First, a homogeneous oligosaccharide PSO-A was isolated and its structure was characterized. Then, the colitis model was induced with 3 % dextran sulfate sodium (DSS) and intervened with PSO-A. The results show that PSO-A was an agavin-type acetylated fructooligosaccharide with a molecular weight of 2.12 kDa. PSO-A consisted of (2 → 6)-β-D-Fruf residue backbone with an internal α-D-Glcp residue and (2 → 1)-β-D-Fruf residue side chains. Further, PSO-A increased mucin content, protected intestinal barrier integrity of colitis mice, and significantly inhibited the levels of inflammatory factors. Moreover, the protein expressions of NLRP3, ASC, and Caspase-1 in colitis mice was statistically inhibited by PSO-A. In summary, PSO-A could alleviate colitis by inhibiting NLRP3 inflammasome pathway, which provides a basis for the development and application of P. sibiricum oligosaccharides as drug or functional food to relieve colitis.
Databáze: Directory of Open Access Journals